1960-1970s a collection of about 1000 Vietnam variety stamps,
including 1961 military stamp and other issues, showcasing perf
shifted,
1960-1970s a collection of about 1000 Vietnam variety stamps,
including 1961 military stamp and other issues, showcasing perf
shifted, colour omitted, imper variety etc.
1970年代一組約100枚越南變異票，包括1961年軍郵票等。展示了齒孔移位、漏色、漏齒等變異。
